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Base62 Encoding

Tool for encoding / decoding with the Base62 encoding system, using all alphanumeric characters (upper and lower case) forming a base 62.

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Base62 Encoding -

Tag(s) : Character Encoding

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Base62 Encoding

Base-62 Decoder

 









See also: Base64 CodingBase 58

Base-62 Encoder



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See also: Base64 CodingBase 58

Answers to Questions (FAQ)

What is Base-62? (Definition)

Base 62 is a numbering system that can also be used to encode binary strings. It uses 62 alphanumeric characters (10 digits 0-9, 26 uppercase letters A-Z and 26 lowercase letters a-z). The 62 symbols used in this base 62 are generally: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.

How to encrypt using Base62 cipher?

The binary data string is converted to base 62 (by a classical change of arithmetic base), the indexes of the 62 symbols are:

0 0112233445566778899
10A11B12C13D14E15F16G17H18I19J
20K21L22M23N24O25P26Q27R28S29T
30U31V32W33X34Y35Z36a37b38c39d
40e41f42g43h44i45j46k47l48m49n
50o51p52q53r54s55t56u57v58w59x
60y61z

Example: The string dCode, encoded in ASCII (01100100,01000011,01101111,01100100,01100101) is equivalent to the decimal number $ 430628103269_{(10)} $, which can be converted to base 62 in $ {7, 36, 3, 5, 39, 26, 53}_{62} $ or the characters 7a35dQr.

How to decrypt Base62 cipher?

Take the base62 string and note the indexes of each character to obtain a base 62 number. Convert this number into binary or directly encode it in ASCII (or Unicode) to obtain the plain message.

Example: Decode R0Ow, R is 27, 0 is 0, O is 24 and w is 58 either the number $ {27,0,24,58}_{62} $ or in decimal $ 6436402_{(10)} $ or in binary $ 11000100011011000110010_{(2)} $ or b62 in ASCII code.

How to recognize a Base62 ciphertext? (Identification)

Base-62 encoded strings contain only alphanumeric characters: numbers, uppercase and lowercase letters.

Example: Base62 is coded KixpUr22

Base62 is case sensitive. Uppercase (A-Z) and lowercase (a-z) characters represent different values.

Why use Base 62?

Base62 maximizes the use of characters available in most text environments (letters and numbers), allowing data to be represented more compactly than number systems based on smaller bases, such as Base 10 or Basis 16.

Base 62 allows data to be compacted, it is used in URL shorteners (web page addresses), in the generation of unique identifiers in computer systems, etc.

Base 62 is sometimes used to store numbers in character strings.

Source code

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Base62 Encoding on dCode.fr [online website], retrieved on 2024-06-18, https://www.dcode.fr/base62-encoding

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